By the time apostle Paul wrote first Corinthians, it was his third contact with the church in Corinth. His first visit was when he established the church. We see this in Acts of the Apostles chapter 18. The second time he spoke to them through a letter. He had heard of moral decadence amongst them and he felt he ought to address it.
The book of First Corinthians is therefor Paul response to the feedback he received from his first letter through someone from Chloe's house.
During Paul's first visit establishing the church, he lived among them for about two year along with Priscilla and Aquila. He worked as a tent maker during that time to sustain himself so as not to burden anyone. This background will help you understand Paul's tone and reasoning as he addresses the issues in this church.
In chapter one, he addresses division and infighting. Chapter two, he talks about Christ, the wisdom of God and how that sounds foolish to the hearer. He tells them that Christ is the power of God that saves us.
"I came to you in weakness—timid and trembling. And my message and my preaching were very plain. Rather than using clever and persuasive speeches, I relied only on the power of the Holy Spirit. I did this so you would trust not in human wisdom but in the power of God. Yet when I am among mature believers, I do speak with words of wisdom, but not the kind of wisdom that belongs to this world or to the rulers of this world, who are soon forgotten. No, the wisdom we speak of is the mystery of God—his plan that was previously hidden, even though he made it for our ultimate glory before the world began."
1 Corinthians 2:3-7 NLT.
Also, the Corinthians believers were comparing Paul to other more powerful and eloquent ministers; like Peter and Apollos. Paul's words because he also lived amongst them as a tent maker was not sounding powerful compared to others. The began questioning Paul's authority as an apostle.
I planted the seed in your hearts, and Apollos watered it, but it was God who made it grow. It’s not important who does the planting, or who does the watering. What’s important is that God makes the seed grow. The one who plants and the one who waters work together with the same purpose. And both will be rewarded for their own hard work. For we are both God’s workers. And you are God’s field. You are God’s building. Because of God’s grace to me, I have laid the foundation like an expert builder. Now others are building on it. But whoever is building on this foundation must be very careful. For no one can lay any foundation other than the one we already have—Jesus Christ.
1 Corinthians 3:6-11 NLT.
The book of First Corinthians will bless you. It is applicable to our present day churches and denominations. It addresses some of the same issues we have in our churches and family today.